/*
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 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */

import ShoppingBeans.Product;
import com.mysql.jdbc.Connection;
import com.mysql.jdbc.PreparedStatement;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 *
 * @author windows 7 Ult
 */
public class BuyCart extends HttpServlet {

    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
     * methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            Class.forName("com.mysql.jdbc.Driver");
            Connection con = (Connection) DriverManager.getConnection("jdbc:mysql://localhost/Shopping", "root", "asmaaelmasry");

            HttpSession sess = request.getSession(false);
            if (sess == null) {
                response.sendRedirect("index.jsp");
            }

            Integer uid = Integer.parseInt((String) sess.getAttribute("id"));

            PreparedStatement ps = (PreparedStatement) con.prepareStatement("SELECT Product.id,name,price,Cart.quantity AS quantity from Cart,Product where Cart.userId=? and Cart.productId=Product.id and Cart.status=0");
            ps.setInt(1, uid);
            ResultSet result = ps.executeQuery();
            List<Product> cartItems = new ArrayList<Product>();
            while (result.next()) {
                Product product = new Product();
                product.setName(result.getString("name"));
                product.setId(result.getInt("id"));
                product.setPrice(result.getFloat("price"));
                product.setQuantity(result.getInt("quantity"));

                cartItems.add(product);
            }

            request.setAttribute("cartItems", cartItems);
            
            ps.close();
            con.close();
            //out.print(cartItems.get(0).getName());
            RequestDispatcher view = request.getRequestDispatcher("cartview.jsp");
            view.forward(request, response);

        } catch (ClassNotFoundException ex) {
            Logger.getLogger(BuyCart.class.getName()).log(Level.SEVERE, null, ex);
        } catch (SQLException ex) {
            Logger.getLogger(BuyCart.class.getName()).log(Level.SEVERE, null, ex);
        } finally {
            out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

    public static boolean isInteger(String s) {
        try {
            Integer.parseInt(s);
        } catch (NumberFormatException e) {
            return false;
        }
        // only got here if we didn't return false
        return true;
    }

}
